UJI KUALITAS BIOCHAR DAN COMPOST TEA TUMBUHAN LOTUS SERTA APLIKASINYA PADA BUDIDAYA BAYAM HIJAU (Amaranthus spp.) DI TANAH ASAL RAWA LEBAK

NUR, TRI PUTRI and Gofar, Nuni and Susilawati, Susilawati (2024) UJI KUALITAS BIOCHAR DAN COMPOST TEA TUMBUHAN LOTUS SERTA APLIKASINYA PADA BUDIDAYA BAYAM HIJAU (Amaranthus spp.) DI TANAH ASAL RAWA LEBAK. Masters thesis, Sriwijaya University.

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Abstract

Lebak swamp is one of the potential areas for cultivating plants, but low soil fertility is one of the limiting factor in this area. Lotus, as a plant that is often found in the lowland swamp area, it has the potential to be developed into fertilizer, such as biochar and compost tea which can play a role in improving soil fertility and increasing the availability of nutrients in the soil. Spinach plants are popular among people because their high nutritional content and spinach can also be cultivated easily, however, spinach production in Indonesia has decreased in recent years due to efforts being made to increase green spinach production through fertilization. This research aims to analyze the quality and the best dosage of biochar and compost tea lotus which can reduce the use of NPK fertilizer, increase nutrient availability and the growth and production of green spinach cultivated on soil from lebak swamps. This research consists of two stages, the first is making and testing the quality of biochar and lotus compost tea, while the second stage of research is evaluating the dosage of biochar, lotus compost tea and its combination with NPK on soil chemical properties, growth and production of green spinach plants that planted on land of swampy origin. The production of lotus biochar and compost tea, as well as the cultivation of green spinach was carried out at Rumah Bayang Jl. Bukit Lama Polytechnic, Ilir Barat 1 District, Palembang, South Sumatra (3°00'15.4"S 104°43'44.5"E). The first stage of this research was carried out in August-September 2023, while the second stage was carried out in October 2023-March 2024. Lotus biochar was made using the drum method for 1-1.5 hours of burning at a temperature of 200℃. Testing the soaking composition in making lotus compost tea was designed using a Completely Randomized Design (CRD) with three treatment levels, namely soaking lotus compost and water at 1:5, 1:10, and 1:20 (w/v). Analysis of the pH and water content of lotus biochar was carried out in Soil Laboratory, Agriculture Faculty, Sriwijaya Univerity, SEM-EDS analysis of lotus biochar was carried out at the PT Cipta Mikro Material Laboratory. Biochar functional group analysis, humic concentration of lotus compost tea was carried out at the Integrated Chemistry Laboratory, UIN Raden Fatah, while analysis of the nutrient content of lotus compost tea was analyzed at the PT Bina Sawit Makmur Laboratory, Sampoerna Agro. The second stage of research was designed using a factorial randomized block design consisting of 3 factors. The first factor is the dose of lotus biochar: 0, 10, and 20tons ha-1, the second factor is the dose of lotus compost tea: 0, 20, and 40mL plant-1, and the third factor is the dose of NPK fertilizer: 0, 50, and 100%. Analysis of lowland swamp soil before planting was carried out at the Soil Department Laboratory, Faculty of Agriculture, Sriwijaya University, while analysis of soil after planting and plant tissue was carried out at BPSIP Bengkulu. The results of the research show that the lotus biochar produced has pH value and water content criteria that meet the criteria for biochar as a soil amendment and also meets the SNI 06-3730-1995 criteria regarding biochar requirements. The functional groups in lotus biochar consist of OH groups from carbonyl and phenol, C=C aromatic structures, C-H from lignin and holocellulose, and C-C functional groups from cellulose and hemicellulose. The results of SEM-EDS analysis of lotus biochar also showed that in various scanning and magnification results several elements were found in biochar such as C, O, Mg, Al, Si, P, Cl, K, Ca, Na, Fe, and S in atomic form. The porous structure of lotus biochar showed that the pores in lotus biochar look larger. The treatment of soaking lotus compost and water 1:5 (w/v) produces better quality and nutrient content for plants. This research also showed that treatment doses of biochar, lotus compost tea, NPK fertilizer, and their interactions had a significant effect on the chemical properties of the soil and the growth and production of green spinach plants. A dosage of 20tons ha-1 lotus biochar and 40mL plant-1 lotus compost tea was able to make the use of NPK fertilizer more efficient by 50% in optimizing soil nutrient availability, growth, production and nutrient uptake of green spinach plants planted in lowland swamp soil. Therefore, the recommended dosage for cultivating green spinach planted in lowland swamps soil is a combination treatment of 20tons ha-1 lotus biochar + 40mL plant-1 lotus compost tea + 50% recommended NPK.

Item Type:	Thesis (Masters)
Uncontrolled Keywords:	biochar, compost tea, bayam hijau, tumbuhan lotus, rawa lebak
Subjects:	S Agriculture > S Agriculture (General) > S1-(972) Agriculture (General) S Agriculture > S Agriculture (General) > S590-599.9 Soils. Soil science. Including soil surveys, soil chemistry, soil structure, soil-plant relationships S Agriculture > S Agriculture (General) > S631-667 Fertilizers and improvement of the soil
Divisions:	05-Faculty of Agriculture > 54104-Botany (Plant Science) (S2)
Depositing User:	Tri Putri Nur
Date Deposited:	15 May 2024 02:33
Last Modified:	15 May 2024 02:33
URI:	http://repository.unsri.ac.id/id/eprint/144037

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